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Allen Bradley 1769-OA8 CompactLogix AC Output Module

Configured for AC discrete signal switching in CompactLogix and MicroLogix 1500 control platforms, the Allen Bradley 1769-OA8 (1769-OA8 Compact I/O Output Module) provides direct electrical execution through eight AC output channels.

Hardware Specifications

Parameter	Specification
Model	1769-OA8
Brand	Allen Bradley
Origin	USA
Product Type	Compact I/O Output Module
Product Line	CompactLogix
Module Type	Discrete AC Output Module
Compatible Controllers	1769 CompactLogix, MicroLogix 1500
Weight	0.44 lbs (0.20 kg)
Power Consumption	145 mA at +5 VDC backplane, 1.125 W
Number of Outputs	8
Output Configuration	2 groups of 4 channels
Voltage Category	120-240 VAC
Operating Voltage Range	85 VAC to 265 VAC
Operating Frequency	47 Hz to 63 Hz
Signal Delay	Turn-on: 1/2 cycle; Turn-off: 1/2 cycle
Bus Current Draw	145 mA at +5 VDC line
Heat Dissipation	2.12 W
Wire Size Solid	22 to 14 AWG
Wire Size Stranded	22 to 16 AWG
Power Supply Distance Rating	8 modules
Mounting Method	DIN Rail; Panel Mount
Compatible Power Supplies	1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4
Series Compatibility	Series A and B
UPC	662468992848

EtherNet/IP and CompactLogix I/O Architecture

The 1769-OA8 operates as a CompactLogix discrete output component within the 1769 I/O architecture. The module exchanges output status through the controller backplane interface and supports modular I/O density expansion. Therefore, system designers can integrate the module into CompactLogix assemblies while maintaining standard rack power and communication structures.

The module supports industrial control applications requiring AC load switching. Additionally, the dual-group output arrangement separates eight channels into two isolated control groups, allowing flexible field wiring configurations.

Frequently Asked Questions

Q: Can the 1769-OA8 operate with MicroLogix 1500 controllers?
A: Yes. The 1769-OA8 supports MicroLogix 1500 systems and 1769 CompactLogix platforms according to the supplied compatibility information.

Q: What AC voltage range does the 1769-OA8 output circuit support?
A: The module operates within an 85 VAC to 265 VAC range at 47 Hz to 63 Hz frequency.

Q: How should field wiring be connected to the output channels?
A: Field wiring should follow the specified wire size range and industrial electrical installation practices. Separate routing from low-level signal wiring helps reduce electrical interference.

Field Installation Guidelines

Install the 1769-OA8 on a compatible 1769 CompactLogix assembly or supported MicroLogix 1500 configuration using DIN Rail or panel mounting methods.

Verify that the controller power supply provides sufficient backplane current capacity before installation. The module requires 145 mA at the +5 VDC backplane line and dissipates 2.12 W during operation.

Route AC output wiring separately from communication cables and low-voltage analog signal wiring. Use appropriate grounding methods for the control cabinet and maintain proper terminal connections according to industrial electrical standards.

Before applying field power, confirm output voltage compatibility, channel grouping configuration, and load requirements. The two output groups contain four channels each, so wiring plans should consider the group arrangement during panel design.

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